I headcanon that Cupid has to act scared around things that are completely normal to her, but she doesn't exactly know what the Ever After High students consider scary so she acts..overly afraid of everything.
That moment she was scared of the woods? Fake.
She acts very overly afraid of Mr. Badwolf and other villains and Mr. Badwolf feels really bad because he doesn't know why he scares Cupid so much.
Everyone tries to figure out what DOESN'T scare Cupid and Cupid just acts afraid of any little thing they show her that's slightly creepy.
Blondie is very confused by this because she literally has skulks with little pink bows in their room, she does specials on her mirrorcast about Cupid and her fears.
But at the same time she says really creepy fucked up shit by Ever After High standards.
"I miss eating eyeballs :("
"I miss talking to dead people."
No one knows what's up with Cupid, she is forever confusing to them.